Lengthen
King James Dictionary [1]
Length'En, length'n.
1. To extend in length to make longer to elongate as, to lengthen a line. 2. To draw out or extend in time to protract to continue in duration as, to lengthen life. The days lengthen from December to June. 3. To extend as, to lengthen a discourse or a dissertation. 4. To draw out in pronunciation as, to lengthen a sound or a syllable. This verb is often followed by out, which may be sometimes emphatical, but in general is useless.
What if I please to lengthen out his date?
Length'En, To grow longer to extend in length. A hempen rope contracts when wet, and lengthens when dry.
Webster's Dictionary [2]
(1): ( v. t.) To extent in length; to make longer in extent or duration; as, to lengthen a line or a road; to lengthen life; - sometimes followed by out.
(2): ( v. i.) To become longer.